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IrinaVladis [17]
3 years ago
6

Can somebody help me with this I need this grade!!!!

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer: 3xy^2 - 3x^2 -1

Step-by-step explanation:

5xy^2 - 2xy^2 = 3xy^2

3x^2 becomes negative due to the negative out in front of the parenthesis

-2y^2 + 2y^2 = 0

-8+7 = -1

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A 30 ft building casts a shadow that is 75 ft. long. A nearby tree casts a shadow that is 35 ft. long. How tall is the tree?
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The tree is 14 ft. tall.

Step-by-step explanation:

Height of the building/ Height of the tree  = Shadow of building/ Shadow of tree

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75x = 1050

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